Table of contents

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1. Intro to General Chemistry3h 48m
2. Atoms & Elements4h 16m
3. Chemical Reactions4h 10m
4. BONUS: Lab Techniques and Procedures1h 38m
5. BONUS: Mathematical Operations and Functions48m
6. Chemical Quantities & Aqueous Reactions3h 53m
7. Gases3h 49m
8. Thermochemistry2h 37m
9. Quantum Mechanics2h 58m
10. Periodic Properties of the Elements3h 9m
11. Bonding & Molecular Structure3h 29m
12. Molecular Shapes & Valence Bond Theory1h 57m
13. Liquids, Solids & Intermolecular Forces2h 23m
14. Solutions3h 1m
15. Chemical Kinetics2h 53m
16. Chemical Equilibrium2h 29m
17. Acid and Base Equilibrium5h 1m
18. Aqueous Equilibrium4h 47m
19. Chemical Thermodynamics1h 50m
20. Electrochemistry2h 42m
21. Nuclear Chemistry2h 36m
22. Organic Chemistry5h 7m
23. Chemistry of the Nonmetals2h 39m
24. Transition Metals and Coordination Compounds3h 16m

3. Chemical Reactions

Naming Ionic Compounds

General Chemistry

3. Chemical Reactions

Naming Ionic Compounds

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Multiple Choice

When is a Roman numeral used in the name of an ionic compound?

When the compound contains a polyatomic ion

When the metal cation can have more than one possible charge

When the metal is from Group 1 of the periodic table

When the anion is a halide

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Verified step by step guidance

Understand that Roman numerals in the names of ionic compounds indicate the charge (oxidation state) of the metal cation.

Recognize that some metals, especially transition metals, can form more than one type of positive ion with different charges.

Know that when a metal cation can have multiple possible charges, a Roman numeral is used in parentheses immediately after the metal's name to specify its charge.

Note that Roman numerals are not used when the metal has only one common charge, such as Group 1 metals which always have a +1 charge.

Conclude that Roman numerals are not related to the presence of polyatomic ions or the type of anion (like halides), but specifically to metals with variable charges.